<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>my html2</title>
</head>
<body bgcolor="silver" text="blue">
<form action="">
    <label>用户名：</label><input type="text" name="username">
    <label>密码：</label><input type="password" name="password"><br>
    <label><input type="checkbox">Linux</label>
    <label><input type="checkbox">Network</label>
    <label><input type="checkbox">Python</label>
    <label><input type="checkbox">Service</label>
    <select name="lesson">
        <option value="Linux">Linux</option>
        <option value="Network">Network</option>
        <option value="Python">Python</option>
        <option value="Service">Service</option>
    </select>
    <hr color="red">
    <textarea name="" id="" cols="60" rows="10"></textarea>
</form>
</body>
</html>